| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
4043
|
Lithobates catesbeianus
|
Competition
|
Observational
|
Field
|
Lithobates catesbeianus are more abundant than the native California red-legged frog (Rana aurora draytonii) in conditions of predation by nonendemic fish in California, suggesting competitive advantage.
|
California, USA
|
13523
|
|
4049
|
Lithobates catesbeianus
|
Competition
|
Anecdotal
|
Field
|
In its introduced range in the foothills of the Sierra Nevada mountains of the western US, Lithobates catesbeianus was the most abundant amphibian species, and is thought to be one of the main drivers of the extirpation of the red-legged frog (Rana aurora) and reduction in populations of the foothill yellow-legged frog (Rana Boylii).
|
Sierra Nevada Mountains, USA
|
35698
|
|
4054
|
Lithobates catesbeianus
|
Competition
|
Experimental
|
Laboratory
|
In a laboratory setting, Lithobates catesbeianus tadpoles inhibited the growth of the Northern leopard frog (Rana pipiens) tadpoles.
|
|
35703
|
|
4105
|
Lithobates catesbeianus
|
Competition
|
Observational
|
Field
|
Lithobates catesbeianus have replaced the Northern Leopard frog (Lithobates pipiens) in wetland areas of Northeastern Colorado, and in areas where the species co-occur, the Leopard frog populations were not breeding.
|
Colorado, USA
|
19801
|
|
5031
|
Lithobates catesbeianus
|
Competition
|
Anecdotal
|
N/A
|
American bullfrog, Lithobates catesbeianus, alters abundance and distribution of native species through competition.
|
Rome, Italy
|
37589
|
|
5035
|
Lithobates catesbeianus
|
Competition
|
Anecdotal
|
N/A
|
The American bullfrog competes with Lithobates catesbeianus,competes with native amphibians for resources.
|
|
37591
|
|
5055
|
Lithobates catesbeianus
|
Competition
|
Anecdotal
|
N/A
|
American bullfrogs, Lithobates catesbeianus, compete with the critically endangered San Francisco garter snake, Thamnophis sirtalis tetrataenia, for prey resources. Competition is due to seasonal diet overlaps.
|
San Francisco, California
|
37684
|
|
5059
|
Lithobates catesbeianus
|
Competition
|
Anecdotal
|
N/A
|
American bullfrogs, Lithobates catesbeianus, tadpoles and adults are often the dominant amphibian competitors in freshwater communities due to their large size and voracious behavior.
|
|
37688
|
|
5063
|
Lithobates catesbeianus
|
Competition
|
Experimental
|
Field
|
Bullfrog Lithobates catesbeianus larvae may compete with other synoptic tadpoles for shared algal resources.
|
California
|
37700
|
|
5064
|
Lithobates catesbeianus
|
Competition
|
Experimental
|
Field
|
California red-legged frog tadpoles, Rana draytonii, altered activity in response to chemical cues from invasive American bullfrogs, Lithobates catesbeianus. Tadpoles reduced foraging and swimming early in development.
|
California
|
37700
|
|
5065
|
Lithobates catesbeianus
|
Competition
|
Anecdotal
|
N/A
|
Bullfrog, Lithobates catesbeianus, competes with native amphibians for food and habitat.
|
|
37702
|
|
5200
|
Lithobates catesbeianus
|
Competition
|
Anecdotal
|
N/A
|
Bullfrog, Lithobates catesbeianus,causes substantial damage to native fauna through competition.
|
not specified
|
37939
|
|
5202
|
Lithobates catesbeianus
|
Competition
|
Anecdotal
|
N/A
|
Bullfrog, Lithobates catesbeianus, can create acoustic interference with other frog calls.
|
not specified
|
37939
|
|
5314
|
Lithobates catesbeianus
|
Competition
|
Anecdotal
|
N/A
|
Through competition, predation, and disease transmission Lithobates catesbianus poses a threat to 13 species of native anurans in South Korea.
|
South Korea
|
38235
|
|
5444
|
Lithobates catesbeianus
|
Competition
|
Experimental
|
Field
|
Red legged frogs Rana draytonii from populations with Lithobates catesbeianus had lower survival rates than allopatric populations.
|
central California
|
37699
|
|
5501
|
Lithobates catesbeianus
|
Competition
|
Observational
|
Field
|
American bullfrogs, Lithobates catesbeianus, compete against the invasive red swamp crayfish, Procambarus clarkii, in its non-native range in Italy.
|
Central Italy
|
37709
|
|
5676
|
Lithobates catesbeianus
|
Competition
|
Observational
|
Field
|
Bullfrogs, Lithobates catesbeianus, might limit the ability of salamanders to recolonize restored wetlands.
|
Okoboji, Iowa
|
39860
|
|
5679
|
Lithobates catesbeianus
|
Competition
|
Experimental
|
N/A
|
Native anurans modified their mating calls in the presence of invasive bullfrogs (Lithobates catesbeianus).
|
Centro de Pesquisas e Conservacao da Natureza Pro-Mata, Brazil
|
39870
|
|
5686
|
Lithobates catesbeianus
|
Competition
|
Observational
|
Field
|
Native frogs changed their activity and microhabitat usage in the presence of invasive bullfrog (Lithobates catesbeianus).
|
Brazil
|
39897
|
|
5725
|
Lithobates catesbeianus
|
Competition
|
Experimental
|
Field
|
California red-legged frogs (Rana draytonii) became more prevalent and used natural cover differently in ponds where American bullfrogs (Lithobates catesbeianus) were removed.
|
Monterey County, California
|
40113
|
|
5727
|
Lithobates catesbeianus
|
Competition
|
Observational
|
Field
|
White-banded tree frog (Hypsiboas albomarginatus) shifted their calls to a significantly higher frequency when in the presence of American bullfrog (Lithobates catesbeianus).
|
Serra do Itajai“ National Park, Blumenau, Brazi
|
40121
|
|
5728
|
Lithobates catesbeianus
|
Competition
|
Observational
|
Field
|
The invasion of the American bullfrog (Lithobaties catesbeianus) were likely implicated in the decline of native leopard frogs in Colorado.
|
Colorado
|
40122
|
|
7442
|
Lithobates catesbeianus
|
Competition
|
Experimental
|
Laboratory
|
In this laboratory study Lithobates catesbeianus tadpoles were observed feeding on Rana aurora tadpoles. However, this only occurred when food was presented.
|
|
12151
|
|
7685
|
Lithobates catesbeianus
|
Competition
|
Anecdotal
|
N/A
|
Lithobates catesbeianus can cause the decline of native amphibian populations through competition for resources.
|
|
26706
|